// Copyright 2022 Proyectos y Sistemas de Mantenimiento SL (eProsima).
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------
// Modification history:
// feature: content filter topic
// ------------------------------------------------------------------

struct parameter_processor : parse_tree::apply<parameter_processor> {
    template <typename... States>
    static void transform(std::unique_ptr<ParseNode>& n, States&&... /*st*/) {
        n->parameter_index = static_cast<int32_t>(n->m_begin.data[1] - '0');
        if (n->m_end.byte - n->m_begin.byte == 3) {
            n->parameter_index *= 10;
            n->parameter_index += static_cast<int32_t>(n->m_begin.data[2] - '0');
        }
    }
};
